Raiders Playing Chiefs for Native American Heritage Month. Why?

... had come out, concerning the month of November. For one, the Raiders were going to have a celebration event at the home game to be played on Nov. 15.

From the Raiders website, this would be a large-scale event, including broadcasting the game in Navajo, and on-field ceremony honoring Peter MacDonald, who was a Code-Talker during world war II and the Leader of the Navajo Nation.